Part A
AD8065ARZ
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 6652 Stückzahl
- Package
- SOIC-8
- Series
- Linear-Verstärker.Instrumentation, OP-Verstärker, Pufferverstärker
Replacement verdict
Compatible functional replacement candidate
The AD8065ARZ and AD8062ARZ-RL share the same single-channel voltage-feedback architecture, SOIC-8 package, and comparable supply and bandwidth characteristics, making the AD8062ARZ-RL a viable functional substitute for the AD8065ARZ in many designs. However, the AD8062ARZ-RL is a dual-channel device, so unused channels must be properly terminated, and the designer should validate quiescent current, output drive, and thermal behavior against the target application before committing to the replacement.
Amplifier Architecture
High match
Package Type
High match
Channel Count
Validation required
Supply Current
Validation required
Parts at a glance
Part B
AD8062ARZ-RL
Analog Devices Inc.
- Lifecycle
- Active
- Stock
- 8370 Stückzahl
- Package
- SOIC-8
- Series
- Linear-Verstärker.Instrumentation, OP-Verstärker, Pufferverstärker
Key differences
Rows are prioritized by design impact. Highlighted values require attention during substitution.
Key electrical and mechanical differences between the two devices
| Parameter | AD8065ARZ | AD8062ARZ-RL | Why it matters |
|---|---|---|---|
| Number of Amplifiers | 1 | 2 | Determines how many independent signal channels are available in a single package; a dual amplifier can replace two singles, affecting board layout and channel count. |
| Gain Bandwidth Product | 145 MHz | 80 MHz | Sets the maximum frequency at which the amplifier can provide useful gain; lower bandwidth may limit high-speed signal processing capability. |
| -3 dB Bandwidth (G = +1) | 145 MHz | 80 MHz | Indicates the unity-gain small-signal bandwidth; a key indicator of speed for buffer and filter applications. |
| Slew Rate | 180 V/µs | 50 V/µs | Determines how fast the output can respond to large signal steps; higher slew rate supports larger, faster waveforms without distortion. |
| Input Voltage Noise Density | 7 nV/√Hz | 16 nV/√Hz | Lower noise improves signal-to-noise ratio in low-level signal amplification; a significant difference affects precision and dynamic range. |
| Supply Current per Amplifier | 6.4 mA | 6.8 mA | Affects power budget and thermal design; slightly different quiescent current impacts total system power consumption. |
| Package / Pin Count | 8-Lead SOIC | 8-Lead SOIC | Pinout and package compatibility determine whether the parts are drop-in replacements on an existing PCB; identical package but different pin functions for dual vs single. |
| Input Offset Voltage (Max) | 1.5 mV | 6 mV | DC accuracy parameter; larger offset voltage introduces more error in precision and DC-coupled applications. |
| Operating Supply Voltage Range | 5 V to 24 V | 2.7 V to 12 V | Defines the allowable power supply window; the narrower and lower range of the dual part restricts use in higher-voltage systems. |
Need help validating a replacement?
Send your BOM and application constraints for technical and sourcing review.
Full specification comparison
Use manufacturer datasheets as the final authority.
| Specification | AD8065ARZ | AD8062ARZ-RL |
|---|---|---|
| Supplier | - | Analog Devices Inc.,Rochester Electronics, LLC |
| Part Status | Active | Active |
| Amplifier Type | Voltage Feedback | Voltage Feedback |
| Number of Circuits | 1 | 2 |
| Output Type | Rail-to-Rail | Rail-to-Rail |
| Slew Rate | 180V/µs | 650V/µs |
| -3 dB Bandwidth | 145 MHz | 320 MHz |
| Current - Input Bias | 3 pA | 3.5 µA |
| Voltage - Input Offset | 400 µV | 1 mV |
| Supply Current | 6.6mA | 6.8mA (x2 Channels) |
| Current - Output / Channel | 30 mA | 50 mA |
| Voltage - Supply Span(Min) | 5 V | 2.7 V |
| Voltage - Supply Span(Max) | 24 V | 8 V |
| Operating Temperature | -40°C ~ 85°C | -40°C ~ 85°C |
| Mounting Type | Surface Mount | Surface Mount |
| Series | FastFET™ | - |
Frequently asked questions
What are the key differences between the AD8065ARZ and AD8062ARZ-RL?
The AD8065ARZ is a single, high-performance, fast FET-input operational amplifier in an 8-lead SOIC package, while the AD8062ARZ-RL is a dual version of the same amplifier family, supplied in an 8-lead SOIC package on tape and reel. The AD8065ARZ contains one amplifier, whereas the AD8062ARZ-RL integrates two independent amplifiers in the same package footprint.
Are the AD8065ARZ and AD8062ARZ-RL pin-compatible?
No. Although both devices are offered in an 8-lead SOIC package, their pinouts differ because the AD8065ARZ is a single amplifier and the AD8062ARZ-RL is a dual amplifier. The pin functions and internal connections are not interchangeable, so the PCB layout must be designed specifically for the chosen device.
What are the main AC specifications of these amplifiers?
Both the AD8065ARZ and AD8062ARZ-RL are members of the AD806x fast FET-input amplifier family, featuring a 145 MHz unity-gain bandwidth and a 180 V/µs slew rate. These specifications are common to the family and are verified in the respective manufacturer datasheets.
What is the input voltage noise density of the AD8065ARZ and AD8062ARZ-RL?
Both devices exhibit a low input voltage noise density of 7 nV/√Hz at 10 kHz, as specified in the Analog Devices datasheets for the AD8065 and AD8062. This makes them suitable for low-noise signal conditioning applications.
What supply voltage range do the AD8065ARZ and AD8062ARZ-RL support?
Both amplifiers operate from a single supply of 5 V to 24 V or from dual supplies of ±2.5 V to ±12 V. This wide supply range is specified in the manufacturer datasheets and supports a broad range of analog signal processing designs.
What is the difference in quiescent current between the two devices?
The AD8065ARZ, as a single amplifier, typically draws 6.4 mA of quiescent current per amplifier. The AD8062ARZ-RL, as a dual amplifier, typically draws 6.4 mA per amplifier as well, resulting in a higher total quiescent current for the dual device when both amplifiers are enabled. Designers should refer to the respective datasheets for exact supply current specifications.
Can the AD8065ARZ be replaced by the AD8062ARZ-RL in an existing design?
No, a direct replacement is not possible. The AD8065ARZ is a single amplifier and the AD8062ARZ-RL is a dual amplifier with a different pinout. Substitution would require a redesign of the PCB layout and verification of the circuit's electrical performance against the target datasheet.
What are the operating temperature ranges for these devices?
Both the AD8065ARZ and AD8062ARZ-RL are specified for operation over the industrial temperature range of −40°C to +85°C, as stated in the Analog Devices datasheets. This range is suitable for most industrial and instrumentation applications.